| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #include "cr_mem.h"
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| 8 | #include "cr_environment.h"
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| 9 | #include "cr_string.h"
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| 10 | #include "cr_dll.h"
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| 11 | #include "cr_error.h"
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| 12 | #include "cr_spu.h"
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| 13 |
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| 14 |
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| 15 | #include <iprt/param.h>
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| 16 | #include <iprt/string.h>
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| 17 | #include <iprt/path.h>
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| 18 |
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| 19 | #include <stdio.h>
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| 20 |
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| 21 | #ifdef WINDOWS
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| 22 | #ifdef VBOX_WDDM_WOW64
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| 23 | #define DLL_SUFFIX "-x86.dll"
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| 24 | #else
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| 25 | #define DLL_SUFFIX ".dll"
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| 26 | #endif
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| 27 | #define DLL_PREFIX "VBoxOGL"
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| 28 | #define snprintf _snprintf
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| 29 | #elif defined(DARWIN)
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| 30 | #define DLL_SUFFIX ".dylib"
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| 31 | #define DLL_PREFIX "VBoxOGL"
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| 32 | /*
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| 33 | #define DLL_SUFFIX ".bundle"
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| 34 | #define DLL_PREFIX ""
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| 35 | */
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| 36 | #else
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| 37 | #ifdef AIX
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| 38 | #define DLL_SUFFIX ".o"
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| 39 | #define DLL_PREFIX "VBoxOGL"
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| 40 | #else
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| 41 | #define DLL_SUFFIX ".so"
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| 42 | #define DLL_PREFIX "VBoxOGL"
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| 43 | #endif
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| 44 | #endif
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| 45 |
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| 46 | extern void __buildDispatch( SPU *spu );
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| 47 |
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| 48 | static char *__findDLL( char *name, char *dir )
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| 49 | {
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| 50 | static char path[8092];
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| 51 |
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| 52 | if (!dir)
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| 53 | {
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| 54 | #if defined(DARWIN)
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| 55 | char szSharedLibPath[8092];
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| 56 | int rc = RTPathAppPrivateArch (szSharedLibPath, sizeof(szSharedLibPath));
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| 57 | if (RT_SUCCESS(rc))
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| 58 | sprintf ( path, "%s/%s%sspu%s", szSharedLibPath, DLL_PREFIX, name, DLL_SUFFIX );
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| 59 | else
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| 60 | #endif /* DARWIN */
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| 61 | #ifdef VBOX
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| 62 | snprintf ( path, sizeof(path), "%s%sspu%s", DLL_PREFIX, name, DLL_SUFFIX );
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| 63 | #else
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| 64 | sprintf ( path, "%s%sspu%s", DLL_PREFIX, name, DLL_SUFFIX );
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| 65 | #endif
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| 66 | }
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| 67 | else
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| 68 | {
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| 69 | #ifdef VBOX
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| 70 | snprintf ( path, sizeof(path), "%s/%s%sspu%s", dir, DLL_PREFIX, name, DLL_SUFFIX );
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| 71 | #else
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| 72 | sprintf ( path, "%s/%s%sspu%s", dir, DLL_PREFIX, name, DLL_SUFFIX );
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| 73 | #endif
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| 74 | }
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| 75 | return path;
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| 76 | }
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| 77 |
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| 78 | /**
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| 79 | * Load a single SPU from disk and initialize it. Is there any reason
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| 80 | * to export this from the SPU loader library? */
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| 81 |
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| 82 | SPU * crSPULoad( SPU *child, int id, char *name, char *dir, void *server )
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| 83 | {
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| 84 | SPU *the_spu;
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| 85 | char *path;
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| 86 |
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| 87 | CRASSERT( name != NULL );
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| 88 |
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| 89 | the_spu = (SPU*)crAlloc( sizeof( *the_spu ) );
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| 90 | /* ensure all fields are initially zero,
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| 91 | * NOTE: what actually MUST be zero at this point is the_spu->superSPU, otherwise
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| 92 | * crSPUUnloadChain in the failure branches below will misbehave */
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| 93 | crMemset(the_spu, 0, sizeof (*the_spu));
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| 94 | the_spu->id = id;
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| 95 | the_spu->privatePtr = NULL;
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| 96 | path = __findDLL( name, dir );
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| 97 | the_spu->dll = crDLLOpen( path, 0/*resolveGlobal*/ );
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| 98 | the_spu->entry_point =
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| 99 | (SPULoadFunction) crDLLGetNoError( the_spu->dll, SPU_ENTRY_POINT_NAME );
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| 100 | if (!the_spu->entry_point)
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| 101 | {
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| 102 | crError( "Couldn't load the SPU entry point \"%s\" from SPU \"%s\"!",
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| 103 | SPU_ENTRY_POINT_NAME, name );
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| 104 | crSPUUnloadChain(the_spu);
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| 105 | return NULL;
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| 106 | }
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| 107 |
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| 108 | /* This basically calls the SPU's SPULoad() function */
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| 109 | if (!the_spu->entry_point( &(the_spu->name), &(the_spu->super_name),
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| 110 | &(the_spu->init), &(the_spu->self),
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| 111 | &(the_spu->cleanup),
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| 112 | &(the_spu->options),
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| 113 | &(the_spu->spu_flags)) )
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| 114 | {
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| 115 | crError( "I found the SPU \"%s\", but loading it failed!", name );
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| 116 | crSPUUnloadChain(the_spu);
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| 117 | return NULL;
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| 118 | }
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| 119 | #ifdef IN_GUEST
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| 120 | if (crStrcmp(the_spu->name,"error"))
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| 121 | {
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| 122 | /* the default super/base class for an SPU is the error SPU */
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| 123 | if (the_spu->super_name == NULL)
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| 124 | {
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| 125 | the_spu->super_name = "error";
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| 126 | }
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| 127 | the_spu->superSPU = crSPULoad( child, id, the_spu->super_name, dir, server );
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| 128 | }
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| 129 | #else
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| 130 | if (crStrcmp(the_spu->name,"hosterror"))
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| 131 | {
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| 132 | /* the default super/base class for an SPU is the error SPU */
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| 133 | if (the_spu->super_name == NULL)
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| 134 | {
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| 135 | the_spu->super_name = "hosterror";
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| 136 | }
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| 137 | the_spu->superSPU = crSPULoad( child, id, the_spu->super_name, dir, server );
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| 138 | }
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| 139 | #endif
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| 140 | else
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| 141 | {
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| 142 | the_spu->superSPU = NULL;
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| 143 | }
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| 144 | crDebug("Initializing %s SPU", name);
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| 145 | the_spu->function_table = the_spu->init( id, child, the_spu, 0, 1 );
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| 146 | if (!the_spu->function_table) {
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| 147 | crDebug("Failed to init %s SPU", name);
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| 148 | crSPUUnloadChain(the_spu);
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| 149 | return NULL;
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| 150 | }
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| 151 | __buildDispatch( the_spu );
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| 152 | /*crDebug( "initializing dispatch table %p (for SPU %s)", (void*)&(the_spu->dispatch_table), name );*/
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| 153 | crSPUInitDispatchTable( &(the_spu->dispatch_table) );
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| 154 | /*crDebug( "Done initializing the dispatch table for SPU %s, calling the self function", name );*/
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| 155 |
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| 156 | the_spu->dispatch_table.server = server;
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| 157 | the_spu->self( &(the_spu->dispatch_table) );
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| 158 | /*crDebug( "Done with the self function" );*/
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| 159 |
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| 160 | return the_spu;
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| 161 | }
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| 162 |
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| 163 | /**
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| 164 | * Load the entire chain of SPUs and initialize all of them.
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| 165 | * This function returns the first one in the chain.
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| 166 | */
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| 167 | SPU *
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| 168 | crSPULoadChain( int count, int *ids, char **names, char *dir, void *server )
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| 169 | {
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| 170 | int i;
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| 171 | SPU *child_spu = NULL;
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| 172 | CRASSERT( count > 0 );
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| 173 |
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| 174 | for (i = count-1 ; i >= 0 ; i--)
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| 175 | {
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| 176 | int spu_id = ids[i];
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| 177 | char *spu_name = names[i];
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| 178 | SPU *the_spu, *temp;
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| 179 |
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| 180 | /* This call passes the previous version of spu, which is the SPU's
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| 181 | * "child" in this chain. */
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| 182 |
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| 183 | the_spu = crSPULoad( child_spu, spu_id, spu_name, dir, server );
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| 184 | if (!the_spu) {
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| 185 | return NULL;
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| 186 | }
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| 187 |
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| 188 | if (child_spu != NULL)
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| 189 | {
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| 190 | /* keep track of this so that people can pass functions through but
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| 191 | * still get updated when API's change on the fly. */
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| 192 | for (temp = the_spu ; temp ; temp = temp->superSPU )
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| 193 | {
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| 194 | struct _copy_list_node *node = (struct _copy_list_node *) crAlloc( sizeof( *node ) );
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| 195 | node->copy = &(temp->dispatch_table);
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| 196 | node->next = child_spu->dispatch_table.copyList;
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| 197 | child_spu->dispatch_table.copyList = node;
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| 198 | }
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| 199 | }
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| 200 | child_spu = the_spu;
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| 201 | }
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| 202 | return child_spu;
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| 203 | }
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| 204 |
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| 205 |
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| 206 | #if 00
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| 207 | /* XXXX experimental code - not used at this time */
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| 208 | /**
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| 209 | * Like crSPUChangeInterface(), but don't loop over all functions in
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| 210 | * the table to search for 'old_func'.
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| 211 | */
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| 212 | void
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| 213 | crSPUChangeFunction(SPUDispatchTable *table, unsigned int funcOffset,
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| 214 | void *newFunc)
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| 215 | {
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| 216 | SPUGenericFunction *f = (SPUGenericFunction *) table + funcOffset;
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| 217 | struct _copy_list_node *temp;
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| 218 |
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| 219 | CRASSERT(funcOffset < sizeof(*table) / sizeof(SPUGenericFunction));
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| 220 |
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| 221 | printf("%s\n", __FUNCTION__);
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| 222 | if (table->mark == 1)
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| 223 | return;
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| 224 | table->mark = 1;
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| 225 | *f = newFunc;
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| 226 |
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| 227 | /* update all copies of this table */
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| 228 | #if 1
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| 229 | for (temp = table->copyList ; temp ; temp = temp->next)
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| 230 | {
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| 231 | crSPUChangeFunction( temp->copy, funcOffset, newFunc );
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| 232 | }
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| 233 | #endif
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| 234 | if (table->copy_of != NULL)
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| 235 | {
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| 236 | crSPUChangeFunction( table->copy_of, funcOffset, newFunc );
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| 237 | }
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| 238 | #if 0
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| 239 | for (temp = table->copyList ; temp ; temp = temp->next)
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| 240 | {
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| 241 | crSPUChangeFunction( temp->copy, funcOffset, newFunc );
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| 242 | }
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| 243 | #endif
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| 244 | table->mark = 0;
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| 245 | }
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| 246 | #endif
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| 247 |
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| 248 |
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| 249 |
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| 250 | /**
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| 251 | * Call the cleanup() function for each SPU in a chain, close the SPU
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| 252 | * DLLs and free the SPU objects.
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| 253 | * \param headSPU pointer to the first SPU in the chain
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| 254 | */
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| 255 | void
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| 256 | crSPUUnloadChain(SPU *headSPU)
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| 257 | {
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| 258 | SPU *the_spu = headSPU, *next_spu;
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| 259 |
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| 260 | while (the_spu)
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| 261 | {
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| 262 | crDebug("Cleaning up SPU %s", the_spu->name);
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| 263 |
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| 264 | if (the_spu->cleanup)
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| 265 | the_spu->cleanup();
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| 266 |
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| 267 | next_spu = the_spu->superSPU;
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| 268 | crDLLClose(the_spu->dll);
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| 269 | crFree(the_spu);
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| 270 | the_spu = next_spu;
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| 271 | }
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| 272 | }
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